The focusing muscle (ciliary muscle), which controls the shape of the lens, is thus in a constant state of contraction.

这种控制晶体形状的调焦肌肉(睫状肌)，长期处于收缩状态。

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The focusing muscle (ciliary muscle), which controls the shape of the lens, is thus in a constant state of contraction.

这种控制晶体形状的调焦肌肉(睫状肌)，长期处于收缩状态。

youdao